CN101576435B - Guided and closed annular wind tunnel - Google Patents
Guided and closed annular wind tunnel Download PDFInfo
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- CN101576435B CN101576435B CN200910069130XA CN200910069130A CN101576435B CN 101576435 B CN101576435 B CN 101576435B CN 200910069130X A CN200910069130X A CN 200910069130XA CN 200910069130 A CN200910069130 A CN 200910069130A CN 101576435 B CN101576435 B CN 101576435B
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- guide wheel
- sleeve pipe
- guided
- wind tunnel
- air
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Abstract
The invention discloses a guided and closed annular wind tunnel which is provided with an annular chamber with an oval tube structure. The tube wall of the annular chamber is provided with a pluralityof air exhaust openings, air injection openings and sealed hatch doors, wherein a plurality of pairs of air-guide tubes and air-return tubes, communicated with the annular chamber, are arranged corre spondingly and tangentially on two side walls of arc-shaped tube walls at both ends of the oval annular chambers in major axis. The other end of each pair of air-guide tube and air-return tube is connected with a three-way body. Every two adjacent three-way bodies, connected with the air-guide tube and the air-return tube, are connected with a power guide device. The air-guide tubes are arranged on the annular chamber in the same direction as the set airflow direction; the air-return tubes are arranged on the annular chamber in a direction opposite to the set airflow direction. The wind tunnelhas simple structure, can obtain continuous accelerating force, provide a plurality of modes simulating the flow velocity, flow line, flow volume, heat and pressure of actual flow fields, and is not limited in the experiment period. The invention has relatively high efficiency, energy conservation and environmental protection.
Description
Technical field
The present invention relates to a kind of experiment wind-tunnel, particularly relate to the guided and closed annular wind tunnel of a kind of flow velocity that the actual flow field of multiple simulation can be provided, streamline, flow etc.
Background technology
Wind-tunnel (wind tunnel), be manually to produce and to control air-flow, with flowing of simulated flight device or object ambient gas, and can measure air-flow to the effect of object and a kind of pipe-like experimental facilities of observing physical phenomenon, it is to carry out the most frequently used, the most effective instrument of aerodynamic experiment.Wind tunnel experiment is an indispensable ingredient in the aircraft development work.It not only plays an important role in the research and development of aerospace engineering, along with the development of industrial aerodynamics, also obtains application more and more widely in departments such as communications and transportation, building construction, Wind Power Utilization and environmental protection.
The wind-tunnel branch has: low-speed wind tunnel, high-speed wind tunnel, subsonic wind tunnel, transonic wind tunnel, supersonic wind tunnel, low density wind tunnel, heat are towards wind-tunnel, automobile wind tunnel etc.But, no matter be the wind-tunnel of what form, all are hatch frames, its experimental data is to occur moment, is not constant.Obtain experimental data and must catch the instantaneous moment that experimental data occurs.So it is difficult obtaining experimental data.
Summary of the invention
Technical matters to be solved by this invention is, the guided and closed annular wind tunnel of a kind of flow velocity that the multiple actual flow field of simulation can be provided, streamline, flow etc. is provided.
The technical solution adopted in the present invention is: a kind of guided and closed annular wind tunnel, include ring casing, and described ring casing is the oval pipe structure, the tube wall of described ring casing is provided with a plurality of exhausr ports and a plurality of gas injection port and a plurality of sealing hatch door; Wherein, constitute on the two side of arc tube wall at oval ring casing major diameter two ends corresponding respectively and tangentially be provided with many wireway and mufflers to being communicated with ring casing, the other end of the every pair of wireway and muffler all is connected on the three-way body, connects one group of power guiding device between per two adjacent three-way bodies that are connected with wireway and muffler.
Described a plurality of exhausr port and a plurality of gas injection port are corresponding setting on the tube wall of ring casing.
The be provided with direction of described wireway on ring casing is identical with the air flow direction that sets; The be provided with direction of described muffler on ring casing is opposite with the air flow direction that sets.
Described wireway and muffler are rectangular being connected on the three-way body, and are communicated with a end of power guiding device on being connected three-way body, and described wireway and muffler are rectangular is connected on the port on the three-way body and is provided with retaining valve.
Constitute in the pipe of straight-tube portion at oval ring casing minor axis two ends and be set to the test block.
Described power guiding device includes: symmetrically arranged two plug cylinder tracheaes, and an end correspondence of described plug cylinder tracheae is connected on the three-way body; And symmetrically arranged two pistons, in the other end that is installed in adjacent plug cylinder tracheae of described two piston correspondences; Described two pistons are to link to each other by piston rod, and described piston rod runs through the first negative pressure trimmer valve, first stage clip, the first guide wheel fixed cover, first guide wheel, first sleeve pipe, sleeve rotor, second sleeve pipe, second guide wheel, the second guide wheel fixed cover, second stage clip and the second negative pressure trimmer valve successively.
Be provided with fan in the described piston.
All be formed with guide groove on described first guide wheel and second guide wheel, be provided with the system guide posts on the first guide wheel fixed cover and the second guide wheel fixed cover, being embedded in the first guide wheel fixed cover and the second guide wheel fixed cover of described first guide wheel and the second guide wheel correspondence, described system guide posts is embedded in the described guide groove by bearing, and described first guide wheel and second guide wheel are made crankmotion respectively under the qualification of system guide posts.
All have guiding groove on described first sleeve pipe and second sleeve pipe, the corresponding bearing pin that is respectively arranged with in the guiding groove that is used to be embedded on first sleeve pipe and second sleeve pipe of guiding groove on the described piston rod two ends and first sleeve pipe and second sleeve pipe, described bearing pin is to be embedded in guiding groove by bearing, and drives the piston rod rotation by the rotation of first sleeve pipe and second sleeve pipe.
On the corresponding respectively end face that is fixedly connected on the sleeve rotor two ends of described first sleeve pipe and second sleeve pipe.
Guided and closed annular wind tunnel of the present invention, simple in structure, can under full closeding state, obtain to continue accelerating force.Flow velocity, streamline, flow and the heating power pressure state in the actual flow field of multiple simulation can be provided, can obtain the more similar accurate number of closing to reality (Mach number, Reynolds number etc.).The system of remaining silent has bigger stability.The experiment period is unrestricted.Because the indoor circulation flow field of closed loop does not have gas head resistance, by the power guidance system, the coherence acceleration force of air-flow is superposeed, and do not have fluid and dissipate, so the present invention is more efficient, more energy-conservation, more environmental protection.And the design of the power acceleration system among the present invention has more handling.
Description of drawings
Fig. 1 is the loop configuration synoptic diagram of annular wind tunnel of the present invention;
Fig. 2 is the structural representation of the left side view of Fig. 1;
Fig. 3 is the rear structure synoptic diagram of Fig. 2;
Fig. 4 is the structural representation of the power guiding device among Fig. 2.
Wherein:
1: ring casing 2: wireway
3: muffler 4: three-way body
5: plug cylinder tracheae 6: the power guiding device
7: exhausr port 8: gas injection port
9: sealing hatch door 10: piston
12: the first stage clips of 11: the first negative pressure trimmer valves
14: the first guide wheels of 13: the first guide wheel fixed covers
18: the second guide wheels of 17: the second sleeve pipes
20: the second stage clips of 19: the second guide wheel fixed covers
21: the second negative pressure trimmer valves 22: piston rod
23: fan 24: guide groove
25: system guide posts 26: guiding groove
27: bearing pin 28: test block
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify the present invention and how to realize.
As Fig. 1, Fig. 2, shown in Figure 3, guided and closed annular wind tunnel of the present invention includes ring casing 1, and described ring casing 1 is the oval pipe structure, is the ring casing that is connected the formed oval pipe of two each and every one semi arches by two common tangents.The tube wall of described ring casing 1 is provided with a plurality of exhausr ports 7 and a plurality of gas injection port 8 and a plurality of sealing hatch door 9; Wherein, constitute the many wireway 2 and mufflers 3 that are provided with of corresponding respectively and tangential direction on the two side of arc tube wall at oval ring casing 1 major diameter two ends to being communicated with ring casing 1, the other end of the every pair of wireway 2 and muffler 3 all is connected on the three-way body 4, connects one group of power guiding device 6 between per two adjacent three-way bodies 4 that are connected with wireway 2 and muffler 3.
Described a plurality of exhausr port 7 and a plurality of gas injection port 8 are corresponding setting on the tube wall of ring casing 1.
The be provided with direction of described wireway 2 on ring casing 1 is identical with the air flow direction that sets; The be provided with direction of described muffler 3 on ring casing 1 is opposite with the air flow direction that sets.
Both are rectangular being connected on the three-way body 4 for described wireway 2 and muffler 3, and are communicated with a end of power guiding device 6 on being connected three-way body 4, are provided with retaining valve on this port of described wireway 2 and muffler 3.
Constitute in the pipe of straight-tube portion at oval ring casing 1 minor axis two ends and be set to test block 28.
As Fig. 2, shown in Figure 4, described power guiding device 6 includes: symmetrically arranged two plug cylinder tracheaes 5, and an end correspondence of described plug cylinder tracheae 5 is connected on the three-way body 4; And symmetrically arranged two pistons 10, in the other end that is installed in adjacent plug cylinder tracheae 5 of described two piston 10 correspondences; Described two pistons 10 are to link to each other by piston rod 22, and described piston rod 22 runs through the piston rod 22 of the first negative pressure trimmer valve 11, first stage clip 12, the first guide wheel fixed cover 13, first guide wheel 14, first sleeve pipe 15, sleeve rotor 16, second sleeve pipe 17, second guide wheel 18, the second guide wheel fixed cover 19, second stage clip 20 and the second negative pressure trimmer valve 21 successively.
Be provided with the adjustable fan of flabellum 23 in the described piston 10.
All be formed with guide groove 24 on described first guide wheel 14 and second guide wheel 18, be provided with system guide posts 25 on the first guide wheel fixed cover 13 and the second guide wheel fixed cover 19, being embedded in the first guide wheel fixed cover 13 and the second guide wheel fixed cover 19 of described first guide wheel 14 and second guide wheel, 18 correspondences, described system guide posts 25 is embedded in the described guide groove 24 by bearing, and described first guide wheel 14 and second guide wheel 18 are made crankmotion respectively under the qualification of system guide posts 25.
All have guiding groove 26 on described first sleeve pipe 15 and second sleeve pipe 17, the guiding groove 26 corresponding bearing pins 27 that are respectively arranged with in the guiding groove 26 that is used to be embedded on first sleeve pipe 15 and second sleeve pipe 17 on described piston rod 22 two ends and first sleeve pipe 15 and second sleeve pipe 17, described bearing pin 27 is to be embedded in guiding groove 26 by bearing, and drives piston rod 22 rotations by first sleeve pipe 15 and 17 rotations of second sleeve pipe.
On the corresponding respectively end face that is fixedly connected on sleeve rotor 16 two ends of described first sleeve pipe 15 and second sleeve pipe 17.
The course of work of guided and closed annular wind tunnel of the present invention is as follows:
The experiment thing is inserted the test block of ring casing by the sealing hatch door, and normal pressure is experiment down, answer the opening encapsulation hatch door after, make air in the ring casing form circulation by gas injection after, promptly close hatch door.Start the motor in the power guiding device, because the annexation of system guide posts, the sleeve rotor of motor drives piston rod, first guide wheel, second guide wheel, two pistons and fan and rotates simultaneously.Because the system guide posts on the piston rod is embedded in the guide groove on first sleeve pipe and second sleeve pipe, in the plug cylinder tracheae, does to rotate to-and-fro movement again thereby formed fan, piston.Be formed in one group of power guiding device on the curved pipe of oval ring casing one side, when piston (right side) rotation left, the endoceliac valve body of threeway is closed the retaining valve of wireway, the retaining valve of muffler is opened, and by muffler to the ring casing return-air, at this moment, the wireway that is formed on the curved pipe of oval ring casing opposite side is opened, muffler is closed, and the air in the ring casing is inhaled in the pipe, makes piston (left side) rotation, translation motion to the right in one group of power guiding device of this side.Motion and so forth makes and forms air circulation in the ring casing, and the modulation by variable-frequency motor, makes circulation obtain different acceleration, by the taking out of exhausr port and gas injection port, air injection, can obtain different pressure densities again.The power guiding device is as shaft coupling, and it is little to consume energy, and air circulation forms differential pressure in wireway outlet and muffler exit, wireway place pressure height.Muffler place air pressure is lower, has reduced the power consumption of reciprocating motion of the pistons.In order to overcome turn back a little inertia vector of reciprocating motion of the pistons, at upper cover of piston rod first, second negative pressure trimmer valve and first, second stage clip are arranged, make motion end in a direction, the negative pressure trimmer valve cuts out the port of plug cylinder tracheae under the compressing of stage clip, when even the motion of this direction closes to an end, make piston form negative pressure between the port, compressed stage clip and negative pressure trimmer valve play the effect of inertia buffering jointly, simultaneously, for the return starting provides conservative force, the distribution of exerting all one's strength is more even, and it is more steady to move.With piston mutually the fan of interlock in rotation back and forth, constantly adjust the orientation angle of flabellum, played rectification and reduced the retardance of locular wall air, improved the acceleration efficiency.
Claims (10)
1. guided and closed annular wind tunnel, include ring casing (1), it is characterized in that described ring casing (1) is the oval pipe structure, the tube wall of described ring casing (1) is provided with a plurality of exhausr ports (7) and a plurality of gas injection port (8) and a plurality of sealing hatch door (9); Wherein, constitute on the two side of arc tube wall at oval ring casing (1) major diameter two ends corresponding respectively and tangentially be provided with many wireway (2) and mufflers (3) to being communicated with ring casing (1), the other end of every pair of wireway (2) and muffler (3) all is connected on the three-way body (4), connects one group of power guiding device (6) between per two adjacent three-way bodies (4) that are connected with wireway (2) and muffler (3).
2. guided and closed annular wind tunnel according to claim 1 is characterized in that, described a plurality of exhausr ports (7) and a plurality of gas injection port (8) are corresponding setting on the tube wall of ring casing (1).
3. guided and closed annular wind tunnel according to claim 1 is characterized in that, the be provided with direction of described wireway (2) on ring casing (1) is identical with the air flow direction that sets; The be provided with direction of described muffler (3) on ring casing (1) is opposite with the air flow direction that sets.
4. guided and closed annular wind tunnel according to claim 1, it is characterized in that, both are rectangular being connected on the three-way body (4) for described wireway (2) and muffler (3), and be communicated with a end of power guiding device (6) on being connected three-way body (4), be provided with retaining valve on the rectangular port that is connected on the three-way body (4) of described wireway (2) and muffler (3).
5. guided and closed annular wind tunnel according to claim 1 is characterized in that, constitutes in the pipe of straight-tube portion at oval ring casing (1) minor axis two ends to be set to test block (28).
6. guided and closed annular wind tunnel according to claim 1 is characterized in that, described power guiding device (6) includes: symmetrically arranged two plug cylinder tracheaes (5), and an end correspondence of described plug cylinder tracheae (5) is connected on the three-way body (4); And symmetrically arranged two pistons (10), in the other end that is installed in adjacent plug cylinder tracheae (5) of described two pistons (10) correspondence; Described two pistons (10) are to link to each other by piston rod (22), and described piston rod (22) runs through the first negative pressure trimmer valve (11), first stage clip (12), the first guide wheel fixed cover (13), first guide wheel (14), first sleeve pipe (15), sleeve rotor (16), second sleeve pipe (17), second guide wheel (18), the second guide wheel fixed cover (19), second stage clip (12) and the second negative pressure trimmer valve (11) successively.
7. guided and closed annular wind tunnel according to claim 6 is characterized in that, is provided with fan (23) in the described piston (10).
8. guided and closed annular wind tunnel according to claim 6, it is characterized in that, all be formed with guide groove (24) on described first guide wheel (14) and second guide wheel (18), be provided with system guide posts (25) on the first guide wheel fixed cover (13) and the second guide wheel fixed cover (19), what described first guide wheel (14) and second guide wheel (18) were corresponding is embedded in the first guide wheel fixed cover (13) and the second guide wheel fixed cover (19), described system guide posts (25) is embedded in the described guide groove (24) by bearing, and described first guide wheel (14) and second guide wheel (18) are made crankmotion respectively under the qualification of system guide posts (25).
9. guided and closed annular wind tunnel according to claim 6, it is characterized in that, all have guiding groove (26) on described first sleeve pipe (15) and second sleeve pipe (17), the corresponding bearing pin (27) that is respectively arranged with in the guiding groove (26) that is used to be embedded on first sleeve pipe (15) and second sleeve pipe (17) of guiding groove (26) on described piston rod (22) two ends and first sleeve pipe (15) and second sleeve pipe (17), described bearing pin (27) is to be embedded in guiding groove (26) by bearing, and drives piston rod (22) rotation by the rotation of first sleeve pipe (15) and second sleeve pipe (17).
10. guided and closed annular wind tunnel according to claim 6 is characterized in that, on the corresponding respectively end face that is fixedly connected on sleeve rotor (16) two ends of described first sleeve pipe (15) and second sleeve pipe (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910069130XA CN101576435B (en) | 2009-06-04 | 2009-06-04 | Guided and closed annular wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910069130XA CN101576435B (en) | 2009-06-04 | 2009-06-04 | Guided and closed annular wind tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101576435A CN101576435A (en) | 2009-11-11 |
| CN101576435B true CN101576435B (en) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910069130XA Expired - Fee Related CN101576435B (en) | 2009-06-04 | 2009-06-04 | Guided and closed annular wind tunnel |
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| Country | Link |
|---|---|
| CN (1) | CN101576435B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197933B (en) * | 2020-12-10 | 2021-02-26 | 中国空气动力研究与发展中心低速空气动力研究所 | Width-adjustable opening jet flow wind tunnel chamber and opening jet flow wind tunnel test method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0136987A2 (en) * | 1983-09-06 | 1985-04-10 | Ab Rollab | Method and device for attaining a gas flow in a wind tunnel |
| CN201060093Y (en) * | 2007-06-14 | 2008-05-14 | 同济大学 | 3/4 opening reversed flow type automobile model wind-tunnel test device |
-
2009
- 2009-06-04 CN CN200910069130XA patent/CN101576435B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0136987A2 (en) * | 1983-09-06 | 1985-04-10 | Ab Rollab | Method and device for attaining a gas flow in a wind tunnel |
| CN201060093Y (en) * | 2007-06-14 | 2008-05-14 | 同济大学 | 3/4 opening reversed flow type automobile model wind-tunnel test device |
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| Publication number | Publication date |
|---|---|
| CN101576435A (en) | 2009-11-11 |
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Granted publication date: 20101229 Termination date: 20140604 |